SSLEOFError: EOF occurred in violation of protocol

[koxu1996]

I am unable to run example:

$ python --version
Python 2.7.14
$ python rc-exploit --threads 1 plugins.example
Successfully loaded plugin
Using 1 threads/connections
Starting thread 0
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/home/andrew/race-condition-exploit/rc_exploit/utils/create_threads.py", line 39, in run
    conn.send(request_str[:-1])
  File "/home/andrew/race-condition-exploit/rc_exploit/utils/create_threads.py", line 88, in send
    return self.ssl_sock.write(*args, **kwargs)
  File "/usr/lib64/python2.7/ssl.py", line 671, in write
    return self._sslobj.write(data)
SSLEOFError: EOF occurred in violation of protocol (_ssl.c:1741)